王建民的伸卡球為何會轉彎?投手投出的變化球如何受空氣阻力的影 - 運動
By Puput
at 2007-09-26T00:00
at 2007-09-26T00:00
Table of Contents
王建民的伸卡球為何會轉彎?投手投出的變化球如何受空氣阻力的影響?有人知道嗎?可以告訴我一下嗎?謝謝了~~
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運動
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By Ula
at 2007-09-28T12:39
at 2007-09-28T12:39
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at 2007-09-29T01:26
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at 2007-09-27T09:23
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